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Finding the Fourth Proportional to 235,953.61, 325,613.32 and 128,523.61

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Solution

The fourth proportional to 235,953.61, 325,613.32 and 128,523.61 is: 177,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,953.61 : 325,613.32 = 128,523.61 : x
  2. Step 2: Convert to fraction form
    235,953.61/325,613.32 = 128,523.61/x
  3. Step 3: Cross multiply
    235,953.61x = 325,613.32 × 128,523.61
  4. Step 4: Simplify right side
    235,953.61x = 41,848,999,436.19
  5. Step 5: Solve for x
    x = 41,848,999,436.19/235,953.61
  6. Step 6: Final answer
    x = 177,361.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.